Tools & Wizards About Us
51jichuang.com screenshot

Report Summary

  • 47

    Performance

    Renders faster than
    66% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

51jichuang.com

51机床网 - 买卖机床、寻找服务、上51机床

Page Load Speed

11.1 sec in total

First Response

1.3 sec

Resources Loaded

9.7 sec

Page Rendered

154 ms

51jichuang.com screenshot

About Website

Visit 51jichuang.com now to see the best up-to-date 51 Jichuang content and also check out these interesting facts you probably never knew about 51jichuang.com

51机床网是专业的数控机床交易和服务平台，提供最新数控机床品牌、机型及出售信息、机床相关MRO产品交易等，CNC机床展示、CNC机床出售、CNC机床求购、二手机床出售、二手机床求购、旧机床转让、旧机床回收、拍卖等信息。

Visit 51jichuang.com

Key Findings

We analyzed 51jichuang.com page load time and found that the first response time was 1.3 sec and then it took 9.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

51jichuang.com performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

26/100

10%

LCP (Largest Contentful Paint)

Value52.8 s

0/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.053

98/100

15%

TTI (Time to Interactive)

Value21.2 s

1/100

10%

Network Requests Diagram

51jichuang.com

1256 ms

6106b2652a4952e4c7e09bead1f790d8.css

78 ms

jquery-1.11.3.min.js

239 ms

show_o.js

2290 ms

stat.php

4011 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that 47% of them (7 requests) were addressed to the original 51jichuang.com, 13% (2 requests) were made to Ename.com.cn and 7% (1 request) were made to V1.cnzz.com. The less responsive or slowest element that took the longest time to load (4.2 sec) relates to the external source Ename.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 14.9 kB (62%)

Content Size

24.1 kB

After Optimization

9.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 51jichuang.com main page is 24.1 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. HTML takes 10.7 kB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 6.6 kB

  • Original 10.7 kB
  • After minification 10.5 kB
  • After compression 4.1 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 6.6 kB or 62% of the original size.

Image Optimization

-11%

Potential reduce by 57 B

  • Original 500 B
  • After minification 443 B

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, 51 Jichuang needs image optimization as it can save up to 57 B or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-64%

Potential reduce by 6.9 kB

  • Original 10.7 kB
  • After minification 10.7 kB
  • After compression 3.8 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 6.9 kB or 64% of the original size.

CSS Optimization

-63%

Potential reduce by 1.4 kB

  • Original 2.2 kB
  • After minification 2.1 kB
  • After compression 814 B

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. 51jichuang.com needs all CSS files to be minified and compressed as it can save up to 1.4 kB or 63% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (25%)

Requests Now

12

After Optimization

9

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Jichuang. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

51jichuang.com

51jichuang.com

1256 ms

6106b2652a4952e4c7e09bead1f790d8.css

6106b2652a4952e4c7e09bead1f790d8.css

78 ms

jquery-1.11.3.min.js

jquery-1.11.3.min.js

239 ms

show_o.js

show_o.js

2290 ms

stat.php

stat.php

4011 ms

bg.gif

bg.gif

66 ms

ico.gif

ico.gif

67 ms

6106b2652a4952e4c7e09bead1f790d8_qq.png

6106b2652a4952e4c7e09bead1f790d8_qq.png

131 ms

6106b2652a4952e4c7e09bead1f790d8_tel.png

6106b2652a4952e4c7e09bead1f790d8_tel.png

132 ms

getAdInfo

getAdInfo

4156 ms

stat.htm

stat.htm

166 ms

core.php

core.php

1181 ms

9.gif

9.gif

1340 ms

pic.gif

pic.gif

775 ms

app.gif

app.gif

1931 ms

Accessibility Review

51jichuang.com accessibility score

82

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

51jichuang.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

51jichuang.com SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 51jichuang.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that 51jichuang.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

51jichuang.com

Open Graph description is not detected on the main page of 51 Jichuang. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: